ES2928025T3 - Ejection device for a movable furniture part - Google Patents

Abstract

The invention relates to an ejection device (1) for ejecting a movable piece of furniture (2) from a closed position (SS) to an open position (OS) along an opening path (O), comprising a support (3) and a coupling device (26) to couple the ejection device (1) to the moving part of the furniture (2). The coupling device (26) has a coupling piece (25) that can move with respect to the support (3) and a counter coupling piece (24) that is arranged on the moving part of the furniture (2) or on the body. of the furniture (22).). The coupling device (26) has a coupling position (K) and a disengagement position (EK), and the ejection device (1) can be coupled to the moving part of the furniture (2) through the coupling device (26) in the coupling position. (K). The ejection device also comprises a controller, by means of which the coupling device (26) can be switched depending on the opening stroke (O), and the coupling device (26) reaches the disengagement position (EK) from the coupling position (K) in the case of a specified opening stroke (VO). (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Ejection device for a movable furniture part

The present invention relates to an ejection device for ejecting a movable furniture part from a closed position along an opening path to an open position, with a support and a coupling device for coupling the ejection device to the Movable furniture part, where the coupling device has a coupling part that is movable relative to the support and a coupling counterpart arranged in the mobile furniture part or on a furniture body, where the coupling device has a coupling position and an uncoupling position and the ejection device can be coupled to the movable part of the furniture by means of the coupling device located in the coupling position. Furthermore, the invention relates to a piece of furniture with a furniture body, a movable furniture part and such an ejection device.

Various aids have been manufactured and sold in the furniture hardware industry for many years to assist and simplify the movements of moving furniture parts for an operator. Especially in the case of ejection devices, there are already several different variants. Such ejection devices are also often referred to as tactile latch mechanisms or tip devices. With devices of this type it is possible to press the movable furniture part into a closed position, as a result of which an unlocking of a locking device takes place and by this or thereafter the movable furniture part is ejected by the ejection device .

In many of these ejection devices, a stressing of an ejection force accumulator occurs when it is closed, ie when the ejection device is actively depressed again. However, other known variants also provide that the ejection force accumulator is stressed as directly as possible after ejection by the continuous opening movement of the movable part of the piece of furniture. For this, it is necessary to couple the mobile part of the furniture to the ejection device.

A possible coupling variant of this type arises from the document AT 512699 A1. In this case, a coupling element arranged on the tip of the ejection device is coupled to a pusher arranged on the movable part of the piece of furniture. The coupling can be released positively (eg magnetic) or positively (eg via a clamping device).

A similar device with a magnetic coupling arises from the document EP 2 064 405 A0 (corresponds to the document WO 2008/034814 A1).

Also from document WO 2013/017666 A2, on the one hand, a magnetic coupling arises, in which the cabinet doors have a clamping element aligned with the front surface of a tensioning bar, the clamping element being able to be configured as a magnet and dragging the tension bar. On the other hand, a flexible clamping is also described, in which an end part of an ejection element has locking elements that engage with counter-engaging elements of the clamping element.

Finally, we can also refer to the document AT 008 629 U1 in which figures 14 to 16 show a form-fit closure between a free end of a lever and a housing arranged on the mobile part of the piece of furniture. The snap-lock between the free end of the lever and the housing is configured in such a way that it can be separated by the ejection force of the ejection device.

The disadvantage of force-pull (magnetic) coupling is that the moment at which uncoupling occurs depends on the force between the components involved. Therefore, it cannot be precisely determined and adjusted at which point in the opening travel the disengagement takes place. In the case of the so-called form-fitting coupling variants, there is no proper form-fitting closure, but rather a releasable latching via flexible or elastic components. Here, too, it cannot always be guaranteed precisely at which point of the opening path disengagement occurs, since the parts that support one another wear out during the very frequent engagement and disengagement movements. Above all, however, it can happen with both known variants that an undesired disengagement occurs already too soon, due to abrupt pulling of the movable furniture part for a short period of time.

The object of the present invention is to create an ejector device that is alternative to or improved from the state of the art. In particular, a safe, reliable and precise coupling and uncoupling of the coupling device must be ensured.

This is solved by an ejection device with the features of claim 1. According to the invention, therefore, a control device is provided, by means of which the coupling device can be switched depending on the opening stroke, by moving the engagement from the engagement position to the disengagement position in a predetermined opening path. With this, I don't know coupling and uncoupling occurs due to the forces acting directly on the coupling part and the coupling counterpart, rather a distance-controlled coupling and uncoupling takes place. In particular, this means that no disengagement can take place at a wrong point (too early) in the opening stroke, since a fixed engagement is ensured by the control device until the changeover to the disengagement position. The point of engagement and disengagement is thus precisely defined.

In principle, the exact form and manner of coupling is irrelevant, as long as uncoupling in the coupled position is not possible simply by sudden movements or other influences. However, for a particularly secure coupling, it is preferably provided that there is a positive bearing in the coupling position between the coupling part and the coupling counterpart, so that it can be overridden by the control device.

The control device is mechanically set. According to the invention, for a simple configuration of the control device, provision is made for the control device to have a coupling and decoupling element that can be moved relative to the coupling part. In this case, the coupling and decoupling element is guided in a guide track in the support or in a tensioning element so that it can move in a limited manner.

In particular, in such a mechanical control device, it is provided that during at least part of the opening movement up to the predetermined opening path, the coupling part can be moved together with the coupling and decoupling element relative to the support, and once the predetermined opening path is reached, on the one hand the coupling and disengagement element is fixed relative to the support and, on the other hand, the coupling part can be moved relative to the coupling element and decoupling. In addition, for this, it is preferably provided that the coupling and decoupling element has a stop, by means of which the coupling and decoupling element rests on the support, preferably on a head of the support, when the predetermined opening distance is reached. Thus, the coupling and decoupling element and its stop together with the counterstop on the support form the path-dependent control device.

According to the invention, for a good hold, it is provided that at least a region of the head of the coupling part can be separated by the coupling and decoupling element in the coupling position. In concrete terms, this is due to the fact that when the head area of the coupling part is separated, the coupling position between the coupling part and the coupling counterpart is given by the fact that there is a bearing between the head region of the coupling part and a receiving area of the coupling counterpart, whereas when the head region of the coupling part is not separated, the disengagement position between the coupling part of the coupling part and the coupling part is caused by the fact that there is a loose connection between the area of the head of the coupling part and the receiving area of the coupling part.

The head region of the coupling part is in this case preferably designed in such a way that it has at least two extensions that are separated from one another and can be bent relative to one another. For the separation, a tip of the coupling and uncoupling element is inserted into a gap between the extensions, so that these extensions can no longer be bent relative to each other. As a result, a decoupling of the head area from a receiving area of the coupling counterpart is not possible. It is only when the tip of the coupling and decoupling element is no longer between the extensions that the extensions can be bent during a relative movement of the receiving area towards the head area and the loose connection is cancelled.

In order to enable not only a coupling between the ejection device and the movable furniture part, but also the ejection, an ejector element is provided for ejecting the movable furniture part from the closed position into an open position and a force accumulator for ejection that applies a force to the ejection element in the opening direction of the mobile part of the furniture.

In addition, a locking device is provided for locking the ejection element in a locked position, the locking device being able to be unlocked by pushing the movable furniture part into a pushing position that lies behind the closed position.

In addition, the ejection device has a tensioning device for tensioning the ejection force accumulator, preferably by pulling the movable furniture part in the opening direction. In this case, the coupling part of the coupling device is connected to the tensioning device, preferably to a clamping element of the tensioning device. For a material-saving design, it is particularly preferred if the coupling part is made in one piece with this tensioning element of the tensioning device.

In order to prevent individual components from protruding unfavorably from the furniture body after ejection, a return device with a return force accumulator is provided for moving the tensioning device into a return position.

Protection is also sought for a piece of furniture with a furniture body, a mobile part of the furniture and an ejection device according to the invention for the mobile part of the furniture. In this case, the ejection device can be arranged either on the body of the piece of furniture or on the mobile part of the piece of furniture. It is also possible that a retraction device, preferably a damped one, is additionally provided for retracting the movable part of the furniture from an open position to the closed position. In a piece of furniture of this type, it is provided that the ejection device is coupled to the movable part of the furniture by means of the coupling device which is in the coupling position, while in the uncoupling position the movable part of the furniture is released from the coupling device.

More details and advantages of the present invention are explained in more detail below based on the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show:

1 shows a piece of furniture with an ejection device according to a first exemplary embodiment,

FIG. 2 is an exploded view of the ejection device according to the first exemplary embodiment, FIG. 3 is this ejection device in the assembled state, and FIG.

figures 4 to 20, the sequence of movements during the ejection and tensioning of the ejection device according to the first example of embodiment,

21 a piece of furniture with an ejection device according to a second exemplary embodiment, FIG. 22 an exploded view of the ejection device according to the second exemplary embodiment, FIG. 23 this ejection device in the assembled state and

figures 24 to 37, the sequence of movements of an ejection device according to the second exemplary embodiment,

38 a perspective view of a piece of furniture with an ejection device according to a third exemplary embodiment,

figure 39, this ejection device in an exploded view,

figure 40, a perspective view of the assembled ejection device,

Figures 41 to 49 are a plan view of the sequence of movements of the ejection device according to the third exemplary embodiment during ejection, tensioning and return,

Figure 50 the sequence of movements of the ejector device as a whole on one page, Figures 51a and 51b a fourth exemplary embodiment of a coupling device in the coupled position,

FIGS. 52a and 52b show this coupling device in the disengaged and loosely connected position and FIGS. 53a and 53b show the coupling device according to the fourth exemplary embodiment in the disengaged position and with the furniture part raised.

1 shows a piece of furniture 21 with a piece of furniture 22 and a movable part of the piece of furniture 2 in the form of a piece of furniture door. This mobile part of the furniture 2 rotates around a vertical axis by means of two hinges 23 on the body 22 of the furniture. A damping device (not shown) for a closing movement can be integrated into at least one of these hinges 23 . An ejection device 1 is arranged on the furniture body 22 according to a first exemplary embodiment. The coupling counterpart 24 of this ejection device 1 is attached to the movable part of the furniture 2. This coupling counterpart 24 is also drawn directly in the area of the ejection device 1 merely for illustrative purposes. Indeed, in the movable part of the piece of furniture 2 there is naturally only that coupling counterpart 24 . In principle, in all exemplary embodiments it is possible for the ejection device 1 to be arranged on the movable furniture part 2 and for the coupling counterpart 24 to be arranged or formed on the furniture body 22. As a result, the ejection device ejection 1 is ejected from the furniture body 22, so to speak.

FIG. 2 shows the ejection device 1 according to the first exemplary embodiment in an exploded view. This ejection device 1 has as a base element a support 3, by means of which the ejection device 1 is mounted on the piece of furniture 21. Together with a cover, which is not shown, this support 3 can form a housing for the other components of the ejection device 1. On the support 3, the holding element 7 is mounted so that it can be moved. The displacement movement of this tensioning element 7 is damped by the damping device 36. The return force accumulator 15 acts on the tensioning element 7 on the one hand and on the support 3 on the other hand. The tensioning element 7 forms the tensioning device 6 together with the movement transmission element 8 configured as a stop. In addition, an ejection element 4 is mounted so that it can rotate about the axis of rotation X in the pivot support 57 of the support 3. The ejection force accumulator 5, configured as a tension spring, is engaged on one side via the socket 29 for accumulating force of the ejection element with the ejection element 4 and on the other hand with the base 32 for accumulating force of the support of the support 3. The deflection element 38 is mounted so that it can pivot on the tensioning element 7 via the bearing pin 58. Between the biasing element 38 and the tensioning element 7 there is also a biasing force accumulator 39 configured as a tension spring. A coupling device 26 is also provided. This coupling device 26 is mainly formed by the coupling part 25 and the coupling counterpart 24. The coupling part 25 is displaceable in the guide track 28 of the tensioning element 7. The coupling and decoupling element 27 is also arranged slidably in this guide track 28. In addition, a coupling lever 41 is provided, which is rotatably mounted in the swivel bearing 44 of the tensioning element 7 and is guided on the one hand in the longitudinal groove 48 of the coupling part 25 and on the other hand is connected Articulated shape with one end of the coupling counterpart stop 43. A coupling force accumulator 40 is also provided in the form of a tension spring, which acts on the coupling and decoupling element 27 on the one hand and on the coupling part 25 on the other. other side. In addition, a force accumulator of the coupling lever 42 is provided, also designed as a tension spring. This coupling lever force accumulator 42 is engaged on the one hand in the coupling lever 41 and on the other hand in the tensioning element 7. In addition, a head 37 is provided which can be connected to the support 3. In FIG. 3 the ejection device 1 according to the first exemplary embodiment can be seen in the assembled state. Already in this representation according to FIG. 3 it can be clearly seen that the energy storage socket of the holder 32 and the energy storage socket of the ejector element 29 lie in a plane that contains the axis of rotation X of the ejector element. 4 and the line of action W. One can also see the stop 45 formed on the coupling and uncoupling element 27. In this figure 3 it can also be seen that the ejection element 4 is placed on the activation device 35 configured as a stop. on the tensioning element 7.

Figure 4 shows a plan view of the ejection device 1 according to Figure 3. The coupling counterpart 24 connected to the movable part of the furniture 2 represents in this case the position of the movable part of the furniture 2. Consequently, the furniture mobile 2 is in a closed position SS. The blocking device 17 is in the blocking position VS, to which the line of action W of the ejection force accumulator 5 leads via the axis of rotation X. The direction of action of the line of action W is indicated by the arrow and points in the closing direction SR. Since this line of action W runs along the axis of rotation X, the force of the charged ejection force accumulator 5 cannot be deployed. As a result, the ejector 4 is held in a standstill, so to speak. By this, the base of the holder force accumulator 32 (including holder 3), the ejection force accumulator 5 and the ejection element 4 together form the locking device 17. The coupling device 26 is in position coupling K, since the coupling part 25 is coupled to the coupling counterpart 24.

If from this position according to FIG. 4 the movable furniture part 2 is pressed in the closing direction SR, this movable furniture part 2 reaches the overpressure position ÜS according to FIG. coupling 24 the tensioning element 7 also moves in the closing direction SR, whereby the release device stop 35 rotates the ejection element 4 in the direction of rotation D, i.e. counterclockwise, around the axis of rotation X. As a result of this overpressure, the axis of rotation X and the line of action W reach an unlocking relative position ES separated from each other. Thus, the locking device 17 is unlocked.

From this unlocked position according to FIG. 5, the ejection force accumulator 5 can be released, whereby the ejector element 4 continues to rotate in the direction of rotation D (see FIG. 6). As a result, the end of the ejection element 4 leading away from the ejection element force accumulator socket 29 comes into contact with the ejection stop 46 formed on the tensioning element 7. This requires the entire tensioning element 7 to move in the opening direction OR relative to the support 3, whereby again the movable part of the furniture 2 reaches an open position OS, although still small. At the same time, the ejection element 4 also tilts the deflection element 38 in a clockwise direction against the force of the deflection force accumulator 39.

In FIG. 7, the ejection force accumulator 5 has been further relaxed, whereby the furniture part 2 (represented by the coupling counterpart 24) has moved further into the open position OS. The movable furniture part 2 is thus ejected indirectly by the ejection element 4 via the tensioning element 7 and the coupling piece 25. Since the tensioning element 7 moves in the opening direction OR, the recoil force accumulator 15 , which is configured as a tension spring, also begins to be tensioned. In FIG. 8, the ejection element 4 has been completed a quarter of a turn. The ejection force accumulator 5 has already been released essentially halfway. The movable furniture part 2 is in the open position OS, the locking device 17 in the unlocked position ES and the coupling device 26 in the coupling position K. The deflection force accumulator 39 is fully tensioned.

Since the ejector element 4 has already moved further according to FIG. 9, the end of the ejector element 4 away from the socket of the ejector element force accumulator 29 moves again in the opposite direction (i.e. to the right in this case). case). In this way, the deflection force accumulator 39 can also be released again, whereby the deflection element 38 follows the ejection element 4.

Between FIG. 9 and FIG. 10, the ejection device 1 reaches a position, not shown, in which the dead center opposite the locking position VS is reached, in which the base of the force accumulator of the holder 32, the base of the ejector element force accumulator 29 and the axis of rotation X are arranged on a line in plan view. However, in order for the ejection element 4 to continue to move from this neutral position, the deflection force accumulator 39 relaxes further, whereby the deflection element 38 moves the ejection element 4 to the left. position according to FIG. 10. In this position the ejection path A of the ejector device 1 is completed. With this, the tension path S begins from this position, in which the movable part 2 of the device is actively pulled. piece of furniture. Since the tensioning element 7 is coupled to the movable furniture part 2 by means of the coupling device 26, the ejection element 4 according to figure 11 is also moved in the opening direction OR by means of the movement transmission element 8 configured as stop. As a result, when the ejection force accumulator 5 is stressed, the ejection element 4 rotates in the same direction of rotation D (counterclockwise) as when the movable part of the furniture 2 was ejected.

According to FIG. 12, the ejection element 4 has been further rotated in the direction of rotation D around the axis of rotation X by means of the motion transmission element 8.

Finally, in figure 13, the tension path S of the tensioning device 6 has been completed. Consequently, the ejection device 1 has moved in the opening direction OR by the opening path O (composed of the ejection path A and the tension path S). At the same time, the ejection element 4 has also made one full turn, whereby the locked position VS is again reached, in which the line of action W of the ejection force accumulator 5 passes through the axis of rotation. 5. The restoring force accumulator 15 is fully tensioned. The stop 45 on the engagement and disengagement element 27 is attached to the head 37, whereby the predetermined opening path VO for the control device formed by the engagement and disengagement element 27 for the release device is reached or covered. coupling 26. The tip 47 of the coupling and uncoupling element 27 is still in the front area of the coupling part 25, so that the head area of the coupling part 25 is still separate and the two extensions of the areas of the head that are separated by a groove cannot be bent relative to each other. The coupling position K between the area of the head of the coupling part 25 and the receiving area of the coupling counterpart 24 is given by a form-fitting bearing.

If, starting from this position according to FIG. 13, the movable furniture part 2 is pulled further, a path-controlled disengagement of the coupling device 26 takes place (see FIG. 14). Firstly, the tensioning element 7 is moved further in the opening direction OR by the coupling piece 25. However, since the coupling and uncoupling element 27, which forms a control device, is in contact with the part of the head 37, only the coupling piece 25 together with the tensioning element 7 moves in the opening direction OR with respect to the support 3. As a result, the tip 47 of the coupling and disengaging element 27 is withdrawn from the region of the head of the coupling part 25, whereby this region of the head spreads out less or no longer. The head area extensions can thus be folded towards each other. As a result, the disengagement position EK is reached and there is only a loose connection between the head area of the coupling part 25 and the receiving area of the coupling counterpart 24. With this, the coupling part 25, which already 14 can be released from the coupling counterpart 24. During the movement of the coupling and uncoupling element 27 relative to the coupling part 25, the coupling force accumulator 40 is also stressed, since it acts on the coupling piece 25 on the one hand and on the coupling and uncoupling element 27 on the other.

As soon as the coupling counterpart 24 has been completely released from the coupling part 25, the movable furniture part 2 is in a freely rotatable state. At the same time, the coupling force store 40 can relax again, whereby the coupling piece 25 moves in the closing direction SR with respect to the tensioning element 7. In this way, the coupling lever 41 also pivots around the rotary bearing 44. With this movement, the stop of the coupling counterpart 43 is also withdrawn from the tensioning element 7, as soon as the force accumulator of the coupling lever 42 is released. During the retraction of the coupling part 25, the head area of this coupling part 25 enters between the side walls of the coupling part guide 49, as a result of which the parts of the head area of the coupling piece 25 that are separated from each other are pressed against each other. In this way, the tip 47 of the coupling and uncoupling element 27 cannot be moved completely forwards in the coupling part 25. The coupling force accumulator 40 can therefore not be fully relaxed, but only approximately half.

However, in order to fully insert the coupling piece 25 into the coupling piece guide 49, the force accumulator of the coupling lever 42 relaxes according to FIG. 16 and folds the coupling lever 41 until the coupling piece 25 is placed on the stop 59 of the tensioning element 7. As a result, the stop of the coupling counterpart 43 is also fully extended. The tip 47 of the coupling and decoupling element 27 is not yet completely in the front region of the coupling part 25.

Starting from FIG. 16 or already from FIG. 15, the return force accumulator 15 also begins to relax, whereby the position according to FIG. 17 is initially reached.

The tensioning element 7 is then moved further into the position according to Fig. 18 by means of the return force accumulator 15, until the return position R is finally reached in Fig. 19. From Fig. 18 to Fig. 19 , this return movement is damped by the damping device 36. The movable part of the furniture 2 is still in an open position OS. The locking device 17 is in the locking position VS.

If finally, according to figure 20, the movable furniture part 2 is also closed, the coupling counter-part 24 first comes into contact with the stop of the coupling counter-part 43. As a result, the coupling part 25 moves first. in the opening direction OR by rotary movement of the coupling lever 41, as a result of which initially the not separated head area of the coupling part 25 engages in the receiving area of the coupling counterpart 24. Since the coupling part 25 is then no longer held squeezed between the side surfaces of the coupling part guide 49, the coupling force accumulator 40 has also been relaxed according to FIG. 20, whereby the tip 47 of the The coupling and decoupling element 27 again fully penetrates into the head region of the coupling part 25 and thereby widens this head region. Thus, in FIG. 20, the coupling position K of the coupling device 26 is reached again. This FIG. 20 again corresponds to the initial position according to FIG. 4.

21 represents a piece of furniture 21 together with a piece of furniture 22 and a movable piece of furniture 2 with a second exemplary embodiment of an ejection device 1. Here, too, the movable piece of furniture 2 is in turn connected in a hinged manner. with the furniture body 22 by means of hinges 23. The coupling counterpart 24 of the ejection device 1 is connected to the movable part of the furniture 2.

In the exploded view according to figure 22 the second embodiment example of the ejection device 1 can be seen in detail. Again there is a holder 3 which, together with a cover (not shown), can form a housing for the other components of the ejection device 1. On the support 3, the tensioning element 7 is mounted so that it can be moved. This tensioning element 7 is mounted on the support 3 in such a way that it can move damped by means of the damping device 36. The tensioning element 7 is connected to the support 3 by means of the return force accumulator 15. A tension track is provided on the tensioning element 7. guide 28 for the coupling and uncoupling element 27. This coupling and uncoupling element 27 is prestressed by a coupling force accumulator 40 in a counterclockwise direction relative to the tensioning element 7. In this case, the coupling force accumulator 40 It is configured as an approximately V-shaped tension spring, whereby this tension spring has its ends clamped in the tensioning element 7 and bears against the coupling and decoupling element 27 in a central region. In addition, a coupling element tensioner 56 connected to the support 3 is provided, which can be positioned against the stop 45 of the coupling and uncoupling element 27. Also in this exemplary embodiment, a head part 37 is attached to the support 3. A total of three ejection stops 46 are provided on the tensioning element 7, which correspond to the ejection rollers 51 arranged on the ejection element 4. The ejection element 4 itself is rotatably mounted on the swivel bearing 57 of the support 3 via the axis of rotation X. In addition, the tension roller 52 is arranged on the ejection element 4. An eccentric bolt 50 is arranged so that it eccentric on the ejection element 4. The ejection force accumulator 5 is connected on the one hand to the ejection element 4 via the ejector force accumulator socket 29 and on the other hand to the bracket 3 via the socket 32 of the power accumulator of the bracket. In addition, a release device 35 is also provided, which in this exemplary embodiment consists of the release element 55, the release spring 54 and the release clip 53. This release clip 53 is held in the recess 60 of the support 3.

In figure 23, the second embodiment of the ejection device 1 is represented in the assembled state. In this case, the stop 45 of the coupling and uncoupling element 27 is placed on the tensioner 56 of the coupling element. It can also be seen that the holder force accumulator socket 32 and the ejector element force accumulator socket 29 are in the locked position VS represented in a plane containing the axis of rotation X of the ejector element 4 and the line of action W.

Figure 24 shows a view from above of the ejection device 1 that coincides with figure 23. The position of the coupling counterpart 24 corresponds to the position of the mobile part of the furniture 2, which is in the closed position H.H. In addition, the locking device 17 is in the locking position VS, since the line of action W of the ejection force accumulator 5 passes through the axis of rotation X. The front side of the release bracket 53 rests against the eccentric pin 50. In turn, one end area of the release element 55 abuts against the knee area of this release clamp 53. The other end of this release element 55 abuts against the coupling counterpart 24. The The head area of the coupling part 25 is separated by the tip 47 from the coupling and decoupling element 27, since the head area of the coupling part 25 is not located in the receiving area of the coupling counterpart 24 , the coupling device 26 is still in an uncoupling position EK.

If, from this closed position SS according to FIG. 24, the movable furniture part 2 is pressed in the closing direction SR, the movable furniture part 2 reaches the overpressure position ÜS according to FIG. 25. Since the element The release clip 55 is attached to the coupling counterpart 24 and the release clip 53 is in turn attached to the activation element 55 via its knee area, the front surface of the activation clip 53 is pressed against the eccentric pin 50, as a result of which the ejection element 4 is rotated in the direction of rotation D about the axis of rotation X. As a result, the axis of rotation X and the line of action W reach a relative unlocking position ES separated from each other. Thus, the locking device 17 is unlocked. (In the exemplary embodiments shown here, the base of the force accumulator of the ejector element 29 always moves for locking. In principle, however, it would also be possible for the axis of rotation X to shift when overpressing in such a way so that it moves a distance from the line of action W. This would keep the line of action W relative to support 3 unchanged, but the axis of rotation X would move relative to support 3.)

As soon as an operator of the furniture 21 no longer presses the mobile part of the furniture 2, the ejection force accumulator 5 starts to relax further, as shown in figure 26. This ejection force accumulator 5 carries with it the ejection element. ejection 4 and continues to rotate it in the direction of rotation D counterclockwise. Thus, the first of the three ejection rollers 51 comes into contact with a first of the three ejection stops 46, whereby the clamping element 7 is moved by the ejection element 4 in the opening direction OR. Since the coupling part 25 is formed in one piece with the tensioning element 7, the coupling counterpart 24 and with it the movable furniture part 2 also move in the opening direction OR through the head region. of the coupling piece 25. As a result, the movable part of the furniture 2 is in an open opening position OS, albeit slightly. The locking device 17 is in an unlocked position ES. The coupling device 26 is still in an uncoupling position EK. According to figure 26, the tensioning element 7 has already moved slightly with respect to the support 3 in the opening direction OR. However, since the tensioning coupling element 56 is fixed to the support 3 and the stop 45 abuts against this tensioning coupling element 56, the coupling and uncoupling element 27 that forms the control device does not move with the tensioning element. 7 in the opening direction OR. As a result, the tip 47 of the coupling and decoupling element 27 moves away from the head region of the coupling part 25. Because of this, the head region of the coupling part 25 already spreads out less.

Since the tip 47 is further retracted relative to the coupling part 25 according to FIG. 27, the head area of the coupling part 25 no longer separates and this head area can slide into the reception in the counterpart of the coupling 24 due to the mutually flexible design of its two extensions. As a result, however, only a loose connection is achieved between the coupling part 25 and the coupling counterpart 24. Due to the movement of the coupling and disengaging element 27 with respect to the tensioning element 7 along the guide track 28 , the coupling force accumulator 40 is tensioned according to FIG. 27. According to FIG. 27, the ejector element 4 has also already rotated further, whereby a second ejection roller 41 comes into contact with a second ejection stop 46 .

When the ejector 4 continues to rotate as shown in Fig. 28, one end of the elastic coupler tensioner 56 comes into contact with the ejector element 4, whereby the coupler tensioner 56 bends slightly to the left. In this way, the stop 45 of the coupling and uncoupling element 27 is no longer held by the coupling element tensioner 56, whereby the coupling force accumulator 40 can loosen. In this way, the engagement and disengagement element 27 also moves again relative to the tensioning element 7 in the opening direction OR, whereby the tip 47 of the engagement and disengagement element 27 reaches the region of the head of the coupling piece 25 and separates it. In this way, a secure engagement is achieved and thus the coupling position K between the coupling part 25 and the coupling counterpart 24, which cannot be released without a relative movement of the coupling and decoupling element 27. with respect to the coupling piece 25.

According to FIG. 29, half a rotation of the ejection element 4 has been completed. As a result, the ejection force accumulator 5 has fully relaxed and the ejection element 4 is again in a neutral position. With this the ejection path A of the ejection device 1 is completed. The restoring force accumulators 15 have already been tensioned to approximately half. Starting from this figure 29, the movable part 2 of the furniture is now pulled in the opening direction OR.

Due to this additional pulling movement, which has already started in Fig. 30, the tensioning element 7 moves further in the opening direction O with respect to the holder 3. Since a third ejection roller 51 is still in contact with a third ejection stop 46, the ejection element 4 is also rotated further during this tensioning of the ejection force accumulator 5 in the same direction of rotation D as when the movable furniture part 2 was ejected. At the same time, the tensioning roller 52 also comes into contact with the motion transmission element 8. This motion transmission element 8, configured as a stop, forms, together with the tensioning element 7, the tensioning device 6 for the tensioning force accumulator. ejection 5. This is again partially tensioned in figure 30.

According to Fig. 31, the movable part of the furniture 2 moved further in the opening direction OR and at the same time the ejection element 4 was turned further in the direction of rotation D, as a result of which the eccentric bolt 50 became it rests against a flank of the release bracket 53 and this release bracket 53 already bends slightly to the right due to its flexibility, as can be clearly seen in the detailed extract shown above right.

In Fig. 32, the movable part of the furniture 2 has moved further in the opening direction OR, as a result of which the ejection element 4 has rotated further. As a result, the eccentric bolt 50 bends the release clamp 53 even more sharply (see detail at top right).

With another movement, the eccentric bolt 50 finally passes the release clamp 53, as a result of which both components return to their initial position according to figure 33. The position of the ejector element 55 is also adjusted again by the activation spring 54 in such a way that the ejection element 55 protrudes from the support 3 by the extent of the gap. According to FIG. 33, the tension path S is also completed, which together with the ejection path A results in the opening path O of the ejection device 1. When the ejection device 1 moves from FIG. 32 to FIG. 33, the stop 45 of the engagement and disengagement element 27 comes into contact with the head 37. The predetermined opening travel VO is reached. As a result, this engaging and disengaging element 27 also moves relative to the tensioning element 7 under the charge of the engaging force accumulator 40, as a result of which the tip 47 of the engaging and disengaging element 27 protrudes from the head area. of the coupling piece 25 and no longer separates the extensions of this area of the head. In this way, the disengagement position EK of the coupling device 26 is reached. However, there is still a loose connection between the head area of the coupling part 25 and the receiving area of the coupling counterpart 26.

If the movable furniture part 2 is pulled further from this position according to FIG. loose connection is released.

Once this disengagement position EK has been reached, the restoring force accumulator 15 can also relax again and first moves the tensioning element 7 in the closing direction SR until it reaches the position according to FIG. 35. Simultaneously with This movement or from the moment that the stop 45 is no longer positioned on the head 37, the coupling force accumulator 40 can also relax. In this way, the tip 47 of the coupling and decoupling element 27 is displaced towards the head region of the coupling part 25, whereby it is separated again.

In Fig. 36, the restoring force accumulator 15 has been fully relaxed. This return movement is damped by the piston of the damping device 36. In this way, the return position R of the return device 13 or of the return force accumulator 15 is reached. The movable part of the furniture 2, represented by the counterpart coupling 24 is still in the open position OS.

51 finally, according to figure 37, the mobile part of the furniture 2 also moves in the closing direction SR, the mobile part of the furniture 2 reaches the closed position SS. In this closing position SS, the coupling counterpart 24 is again attached to the ejection element 55. The locking device 17 is in the locking position VS. The coupling device 26 is in the disengaged position EK. Figure 37 corresponds again to the initial position according to Figure 24.

38 shows a piece of furniture 21 with a furniture body 22 and a movable piece of furniture 2 in the form of a furniture door. The movable furniture part 2 is pivotally mounted on the furniture body via two hinges 23. A traction device (not shown) for the movable furniture part 2 can be integrated into one of these hinges 23. On the furniture body 22 an ejection device 1 is arranged at a certain distance from the hinge. In this case, it can be seen that the ejection device 1 has a coupling piece 25 at its end facing the movable part of the furniture 2. This coupling piece 25 can be coupled to a coupling counterpart 24 arranged on the movable part of the furniture. piece of furniture. In this figure 38, the mobile part of the piece of furniture 2 is in the open position OS.

An exploded view of the ejection device 1 is shown in FIG. 39. This ejection device 1 shows the support 3 as a base part. Together with a cover (not shown), this can form a housing for all the components of the ejection device 1. A connecting track 18 for the ejection element 4 is formed on the support 3. On the ejection element 4 is accommodated rotatably the control lever 19 by means of the rotary bearing 31 of the control lever. A connecting track 18 for the ejector element 4 is formed on the support 3. The control lever 19 is mounted on the ejector element 4 by means of the control lever swivel bearing 32 so that it can rotate. The control piston 20 is in turn arranged on this control lever 19, which engages in the heart-shaped link track 18. In addition, a guide track 34 for the tensioning element 7 is formed on the support 3. The coupling piece 25 is arranged on the front end of this tensioning element 7, which together forms the coupling device 26. with the coupling counterpart 24. In addition, the coupling and decoupling element 27 with the coupling force accumulator 40 is provided for coupling and decoupling. This coupling force accumulator 40, roughly configured as a V-shaped tension spring , is not shown in Fig. 39, but can be seen from Fig. 41. The guide track 28 for the coupling and uncoupling element 27 is formed on the support 3. In addition, a latch 61 for the coupling element is provided. engagement and disengagement 27, which is rotatably mounted in the bearing 62 and has a receiving bowl 63 for the extension 64 formed in the engagement and disengagement element 27. The bolt stop 65 is held in the recesses 67 of the holder 3 through the bolts 66.

The ejection force accumulator 5 is connected to the ejection element 4 via the spring base 29 on the one hand and acts on the spring base 30 formed on the holder 3 on the other hand. The spring base 29 is articulatedly connected to the ejector element 4 via the bolt 68. In addition, a further control pin 69 is attached to the spring base 29, which allows the spring base 29 to be guided in a directed manner in the area 70 of the connecting track 18. A toothed bar 12 is also formed on the ejection element 4. The tensioning element 7 is movably coupled to the motion transmission element 8. In particular, this motion transmission element 8 is configured as a gear wheel 10, which meshes with the toothed bar 11 of the tensioning element 7 and the toothed bar 12 of the ejection element 4. The movement transmission element 8 is slidably mounted on the one hand on the guide track 9 formed in the support 3 and on the other hand is rotatably mounted on the carriage 16. The ejection track guide 9 has two end stops E1 and E2. The carriage 16 in turn is part of the return device 13 for the tensioning element 7. In particular, the restoring force accumulator 15 acts on this carriage 16. Furthermore, this restoring force accumulator 15 is fixed at the other end to the spring base 32 formed on the support 3.

Figure 40 shows the ejection device 1 in the assembled state. In this case, the coupling part 25 is loosely connected to the coupling counterpart 24. It can also be seen that the clamping element 7 forms the tensioning device 6 together with the movement transmission element 8. In addition, this force transmission element movement 8 forms the recovery element 14 at the same time as the carriage 16. This recovery element 14, together with the recovery force accumulator 15, in turn forms the recovery device 13 in a relaxed position. In this FIG. 40, the return accumulator 15 - which in this case is configured as a spring, in particular as a tension spring - is shown relaxed. On the other hand, the ejection force accumulator 5, which is also designed as a spring, in particular as a tension spring, is in the tensioned position. The control pin 20 of the locking device 17 is located in the locking channel of the heart-shaped link track 18, whereby the entire ejection device 1 is in the locking position VS.

In figures 41 to 49 a top view of the ejection device 1 in various positions is shown on the left side. The same plan view is shown on the right hand side, but the underlying components, which are not actually visible, are also indicated by dashed lines.

In Fig. 41, the ejection device 1 is in the same position as in Fig. 40, ie in the locked position VS. Furthermore, the movable part of the furniture 2, not shown here, is in the closed position SS. This closing position SS is represented by the coupling counterpart 24, which is connected to the movable furniture part 2. In this locking position VS, the tensioning element 7 bears against the ejection element 4 by means of the damping element 33 The control pin 20 arranged in the control lever 19 is located in the fixing cavity of the heart-shaped connecting track 18 of the locking device 17. The ejection force accumulator 5 is tensioned, while the accumulator recoil force 15 is relaxed. The latch 61 surrounds the extension 64 through its receiving cavity 63, whereby the coupling and disengagement element 27 meets with its tip 47 in a retracted position towards the head area of the coupling part 25. In In this position, the coupling force accumulator 40 is tensioned. The coupling force accumulator 40 is held with its two ends in the tensioning element 7 and rests on the coupling and decoupling element 27 in a central region. The coupling device 26 is in the disengagement position EK, in which the coupling part 25 and the coupling counterpart 24 are loosely connected to one another.

If, starting from this closing position SS according to FIG. 41, the movable furniture part 2 is pressed in the closing direction SR, the ejector device 1 moves into the overpressure position ÜS according to FIG. 42. By means of the counterpiece coupling piece 24 and coupling piece 25 this overpressure movement causes the tensioning element 7 to move in the closing direction SR. By means of the damping element 23, the ejection element 4 is also moved against the force of the ejection force accumulator 5 in the closing direction SR, as a result of which the control lever 19 and above all its control bolt 20 are moved. They move out of the fixing cavity of the heart-shaped link track 18 by a deflection slope corresponding to an ejection section of the link track 18. In this way, the ejection element 4 is no longer locked in the support 3 by means of the locking device 17, but is in an unlocked position ES. It can also be seen on the right that the movement transmission element 8 was also moved to the end stop E2 of the guide track 9 with this overpressure movement. With this overpressure movement, the lock 61 also moved relative to the bar stop 65, so the extension 71 of the lock 61 has passed through the flexible end 72 of the lock stop 65 - in the case of a lateral load direction.

As soon as a user releases the movable furniture part 2 from the position according to FIG. 42, the ejection force accumulator 5 can relax. In this way, the ejection device 1 first reaches the position according to figure 43, which corresponds to a slightly open opening position OS of the mobile part of the piece of furniture 2. It can be seen that, in its unlocked position ES, the release pin control 20 has already moved slightly in the opening direction OR through the ejection section of the link track 18. Since the ejection force accumulator 5 pulls the ejection element 4, this ejection element 4 also moves it moves in the opening direction OR relative to the support 3. Since the ejection element 4 is also supported against the tensioning element 7 by the damping element 33, this tensioning element 7 also moves in the opening direction OR. Since, in addition, the movement transmission element 8 is slidably mounted on the guide track 9, the ejection element 4, the movement transmission element 8 and the tensioning element 7 move together with respect to the support 3 on this first part of the ejection path A. By this movement of the tensioning element 7 in the opening direction OR, the lock 61 arranged on it is brought with it, whereby the extension 71 bears against the rigid end 72 of the stop of the lock 65 - in this direction of frontal ejection. This initiates a clockwise rotation of the lock 61 around the bearing 62. As a result, the extension 64 is no longer held in the housing 63 of the lock 61. As a result, according to figure 43, the accumulator The coupling force 40 has already been relaxed and the coupling and uncoupling element 27 together with its tip 47 has moved towards the head area of the coupling part 25. As a result, the separate extensions of the head area are no longer They cannot be bent towards each other and the coupling position K of the coupling device 26 is reached in the form of a positive engagement between the coupling part 25 and the coupling counterpart 24.

In FIG. 44, the ejection device 1 has already traveled the ejection path A. The ejection force accumulator 5 has relaxed. The toothed wheel-shaped motion transmission element 8 bears against the end stop E1 of the guide track 9. With this ejection movement of the ejection element 4 and the joint movement of the motion transmission element 8, also the restoring force accumulator 15 was tensioned.

Since from the open position OS according to FIG. 44 the motion transmission element 8 can no longer move together with the tensioning element 7 due to the impact of the motion transmission element 8 with the end stop E1 of the guide track 9 in the opening direction OR, a relative movement is reached between the tensioning element 7 and the movement transmission element 8 by continuing to pull the movable part of the piece of furniture 2 according to FIG. 45 in the opening direction OR. Specifically, the tensioning element 7 continues to move in the direction R1, as a result of which the motion transmission element 8 rotates counterclockwise. By this rotation of the motion transmission element 8, the ejection element 4 is moved via the toothed bar 12 in the opposite direction R2. As a result, the ejection force accumulator 5 is also retensioned. Thus, the tensioning element 7 together with the movement transmission element 8 forms the tensioning device 6 for the ejection force accumulator 5. This ejection force accumulator 5 is (partly) represented purely schematically as a continuous line in figure 45 and also in figures 46, 47 and 50, to have perspective on the length. In Fig. 45, the extension 64, which at the same time forms a stop 45 for the engagement and disengagement element 27, rests on the support 3. As a result, the predetermined opening path VO is reached. If the movable furniture part 2 is now pulled further in the opening direction OR, the coupling and decoupling element 27 cannot move together with the tensioning element 7, which also forms the coupling part 25.

According to Fig. 46, this tensioning movement has continued through the tensioning element 7 to such an extent that the tip 47 of the coupling and decoupling element 27 has been completely withdrawn from the area of the head of the coupling part 25, whereby the The coupling device 26 is disengaged (disengagement position EK), so that the coupling counterpart 24 and consequently the movable furniture part 2 are no longer coupled to the ejection device 1. The extension 64 is again held in place. the receiving cavity 63 of the lock 61. The coupling force accumulator 40 is recharged. As a result of this tension movement, the control lever 20 has also returned to a position in the link track 20 which lies behind the clamping pocket. In figure 46, the ejection device 1 has also covered the entire opening path O, which is formed by the ejection path A and the subsequent tensioning path S. According to figure 46, the mobile part of the piece of furniture 2 can be now move freely.

Since the movable furniture part 2 no longer exerts any force on the ejection device 1 (i.e. the tensioning element 7 and thus the ejection element 4 is no longer actively pulled), the force accumulator The ejection valve 5 can be briefly and slightly released again until, according to FIG. 47, the control bolt 20 is released and locked in the fixing cavity of the heart-shaped link track 18. the locking position VS of the locking device 17 or of the ejection element 4 again.

Then, according to figure 48, the restorative force accumulator 15 begins to relax. Since this return force accumulator 15 pulls the carriage 16 of the return element 14, but the return element ejection 4 is stopped due to the blocking of the blocking device 17, the motion transmission element 8 in the form of a toothed wheel 10 begins to move on the one hand in the guide track 9 in the direction R2 and on the other hand to rotate on the carriage 16 in direction R2 in a clockwise direction. Due to this rotation of the movement transmission element 8, the tensioning element 7 also moves - in this case twice as fast as the movement transmission element 8 - in the direction R2. The movable furniture part 2 is still in the open position OS, whereas the ejection device 1 is already in the locking position VS of the locking device 17.

In Fig. 49, the restoring force accumulator 15 has been completely relaxed, so that the tensioning element 7 is again in contact with the ejection element 4. In this case the impact of the clamping element 7 on the element The ejection element 4 is damped by the damping element 33. As a result, the tensioning element 7 has been moved to the return position R by the recovery device 13. In contrast to figure 41, in figure 49 the movable part of the Cabinet 2 is still in the open position OS. If the movable furniture part 2 is closed manually from this opening position OS, the coupling counterpart 24 again reaches a loose connection with the coupling part 25 in the last closing section, whereby a loose connection would be reached again. the position according to figure 41.

In FIG. 50, the individual positions according to FIGS. 41 to 49 are again clearly represented in a sequence. A comparison of the third image with the fourth image of this figure 50 shows how, according to the invention, the ejection element 4, the motion transmission element 8 and the tensioning element 7 can move together over the ejection path A with respect to to support 3.

The fourth variant of the coupling device 26 can be used in the same way in the ejection devices 1 according to the first three exemplary embodiments. The only significant difference is that during the disengagement movement, the engagement and disengagement element 27 moves relative to the engagement piece 25 in the opening direction OR and not in the closing direction SR.

51a shows a side view of a coupling device 26 without the remaining parts of an ejector device 1. This coupling device 26 according to FIG. 51a is in the coupling position K. The coupling part 25 has a part coupling front 74, a coupling housing 75 and a rear coupling part 76. The coupling and uncoupling element 27 is guided in this coupling part 25. This first coupling arm 77 is articulated at the rear of the coupling 76. This first coupling arm 77 is articulatedly connected to the second coupling arm 79 via the swivel joint 78. This second coupling arm 79 is in turn connected to the coupling and uncoupling element 27 in an articulated manner. In detail according to FIG. 51 b it can be seen that the coupling part 25 has two mutually spaced extensions in its head region. At the widened tip 47 of the coupling and decoupling element 27 there is a spacer element 73, which rests with its spacers on the inner surfaces of the extensions in the head area of the coupling part 25 and separates them at Pressure. As a result, these extensions rest on corresponding counter surfaces in the receiving region of the coupling counterpart 24 and there is a form-fitting bearing.

In FIG. 52a, the coupling device 26 has been switched depending on the opening path O by the control device. In concrete terms, when a predetermined opening path VO is reached, the second coupling arm 79 is folded down by means of a stop, not shown (for example, in the area of the furniture body 22 or of the support 3), so that the disengagement coupling element 27 was pushed in the opening direction OR with respect to the coupling piece 25. As a result, as can be seen in detail in Fig. 52b, the separation element 73 arranged on the tip 47 has been displaced with with respect to the extensions in the opening direction OR of the coupling piece 25, as a result of which these extensions no longer spread apart. The disengagement position EK of the coupling device 26 has been reached. However, the coupling part 25 and the coupling counterpart 24 are still loosely connected to one another. In detail from FIG. 52b it can also be seen that the narrowest points of the receiving area of the coupling counterpart 24 are wide enough for the extension element 73 to pass through, as well as the extensions of the head area of the coupling. the coupling part 25. Thus, there is no longer any form-fitting support.

Finally, it can be seen from figure 53a that with a new opening movement of the movable part of the furniture 2, the coupling counterpart 24 can lift the coupling part 25, since there is no longer any form-fitting support between the extensions. of the head area of the coupling part 25 and the receiving area of the coupling counterpart 24.

Finally, it should also be noted that in the exemplary embodiments the same functional components are provided with the same reference symbols. The advantages and options mentioned for the exemplary embodiments also apply analogously to the other exemplary embodiments.

Since from the open position OS according to FIG. 44 the movement transmission element 8, due to upon impact of the motion transmission element 8 on the end stop E1 of the guide track 9, it can no longer move in the opening direction OR together with the tensioning element 7, by continuing to pull the mobile part of the furniture 2 on the opening direction OR according to figure 45 a relative movement is reached between the tensioning element 7 and the movement transmission element 8. Specifically, the tensioning element 7 continues to move in the direction R1, as a result of which the element movement transmission 8 rotates counterclockwise. By this rotation of the motion transmission element 8, the ejection element 4 is moved by the toothed bar 12 in the opposite direction R2. As a result, the ejection force accumulator 5 is also retensioned. Thus, the tensioning element 7 together with the movement-transmitting element 8 forms the tensioning device 6 for the ejection force accumulator 5. This ejection force accumulator 5 is shown (partially) in FIG. 45 and also in FIGS. 46 , 47 and 50 in a purely schematic way as a continuous line, to have perspective on the length. In Fig. 45, the extension 64, which at the same time forms a stop 45 for the engagement and disengagement element 27, rests on the support 3. As a result, the predetermined opening path VO is reached. If the movable furniture part 2 is now pulled further in the opening direction OR, the coupling and decoupling element 27 cannot move with the tensioning element 7, which also forms the coupling part 25.

According to FIG. 46, this tensioning movement has been continued by means of the tensioning element 7 to such an extent that the tip 47 of the coupling and decoupling element 27 has been completely withdrawn from the head region of the coupling part 25, whereby disengages the coupling device 26 (disengagement position EK), so that the coupling counterpart 24 and consequently the movable furniture part 2 is no longer coupled to the ejection device 1. The extension 64 is again held in place. the receiving cavity 63 of the lock 61. The coupling force accumulator 40 is recharged. As a result of this tension movement, the control lever 20 has also returned to a position in the link track 20 which lies behind the clamping socket. In figure 46, the ejection device 1 has also covered the entire opening path O, which is formed by the ejection path A and the subsequent tensioning path S. According to figure 46, the mobile part of the piece of furniture 2 can be now move freely.

Since the movable furniture part 2 no longer exerts any force on the ejection device 1 (i.e. the tensioning element 7 and thus the ejection element 4 is no longer actively pulled), the force accumulator of ejection 5 can be briefly and slightly released again until the control pin 20 is locked in the fixing recess of the heart-shaped link track 18 according to FIG. 47 . In this way, the locking position VS of the locking device 17 or of the ejection element 4 is reached again.

Then, according to figure 48, the restorative force accumulator 15 begins to relax. Since this return force accumulator 15 pulls the carriage 16 of the return element 14, but the ejector element 4 is stopped due to the blocking of the blocking device 17, the gear-shaped motion transmission element 8 10 begins to to move on the one hand on the guide track 9 in the direction R2 and on the other hand to turn on the carriage 16 in a clockwise direction. By this rotation of the motion transmission element 8 also moves the tensioning element 7 - in this case twice as fast as the motion transmission element 8 - in the direction R2. The movable furniture part 2 is still in the open position OS, whereas the ejection device 1 is already in the locking position VS of the locking device 17.

In Fig. 49, the restoring force accumulator 15 has been completely relaxed, so that the tensioning element 7 is again in contact with the ejection element 4. In this case the impact of the clamping element 7 on the element The ejection element 4 is damped by the damping element 33. As a result, the tensioning element 7 has been moved to the return position R by the recovery device 13. In contrast to figure 41, in figure 49 the movable part of the Cabinet 2 is still in the open position OS. If the movable furniture part 2 is closed manually from this opening position OS, the coupling counterpart 24 again reaches a loose connection with the coupling part 25 in the last closing section, whereby a loose connection would be reached again. the position according to figure 41.

In FIG. 50, the individual positions according to FIGS. 41 to 49 are shown again clearly in a sequence. A comparison of the third image with the fourth image of this figure 50 shows how, according to the invention, the ejection element 4, the motion transmission element 8 and the tensioning element 7 can move together over the ejection path A with respect to to support 3.

The fourth variant of the coupling device 26 can be used in the same way in the ejection devices 1 according to the first three exemplary embodiments. The only significant difference is that during the disengagement movement, the engagement and disengagement element 27 moves relative to the engagement piece 25 in the opening direction OR and not in the closing direction SR.

51a shows a side view of a coupling device 26 without the remaining parts of an ejector device 1. This coupling device 26 according to FIG. 51a is in the coupling position K. The coupling part 25 has a part front coupling part 74, a coupling housing 75 and a rear coupling part 76. In this coupling part 25 the element is guided coupling and disengaging arm 27. This first coupling arm 77 is pivotally attached to the rear coupling part 76. This first coupling arm 77 is pivotally connected to the second coupling arm 79 via the swivel joint 78. This second coupling arm 79 is in turn connected to the coupling and uncoupling element 27 in an articulated manner. In detail according to FIG. 51 b it can be seen that the coupling part 25 has two mutually spaced extensions in its head area. At the widened tip 47 of the coupling and decoupling element 27 there is a spacer element 73, which rests with its spacers on the inner surfaces of the extensions in the head area of the coupling part 25 and separates them at Pressure. As a result, these extensions rest on corresponding counter surfaces in the receiving region of the coupling counterpart 24 and there is a form-fitting bearing.

In FIG. 52a, the coupling device 26 has been switched as a function of the opening path O by the control device. In concrete terms, when a predetermined opening path VO is reached, the second coupling arm 79 is folded down by means of a stop, not shown (for example, in the area of the furniture body 22 or of the support 3), so that the engaging and disengaging element 27 was pushed in the opening direction OR with respect to the engaging piece 25. As a result, as can be seen in detail in Fig. 52b, the separating element 73 arranged on the tip 47 has shifted with respect to the extensions in the opening direction OR of the coupling piece 25, as a result of which these extensions no longer spread apart. The disengagement position EK of the coupling device 26 has been reached. However, the coupling part 25 and the coupling counterpart 24 are still loosely connected to each other. In detail from FIG. 52b it can also be seen that the narrowest points of the receiving area of the coupling counterpart 24 are wide enough for the extension element 73, as well as the extensions of the head region of the coupling part. coupling 25. Therefore, there is no longer any support in form drag.

Finally, it can be seen from figure 53a that with a new opening movement of the movable part of the furniture 2, the coupling counterpart 24 can lift the coupling part 25, since there is no longer any form-fitting support between the extensions. of the head area of the coupling part 25 and the receiving area of the coupling counterpart 24.

Finally, it should also be noted that the same functional components are provided with the same reference symbols in the exemplary embodiments. The advantages and options mentioned for the exemplary embodiments also apply analogously to the other exemplary embodiments.

Claims (13)

1. Ejection device (1) for ejecting a mobile part of the piece of furniture (2) from a closed position (SS) to an open position (OS) along an opening path (0), comprising - a support (3) and - a coupling device (26) for coupling the ejection device (1) to the movable part of the piece of furniture (2), wherein the coupling device (26) comprises a coupling piece (25) that can be moved with with respect to the support (3) and a coupling counterpart (24) that is arranged on the mobile part of the furniture (2) or on a furniture structure (22), in which the coupling device (26) presents a position of coupling (K) and an uncoupling position (EK), and the ejection device (1) can be coupled to the movable part of the furniture (2) by means of the coupling device (26) which is in the coupling position ( K), characterized by - a control device, by means of which the coupling device (26) can be switched depending on the opening path (0), in which the coupling device (26) during a predetermined opening path (VO) reaches the disengagement position (EK) from the engagement position (K), in which the control device has a coupling and disengagement element (27) that is movable relative to the coupling part (25), in which when At least one head region of the coupling part (25) can be separated by the coupling and disengagement element (27) and in the case of a non-separated head region of the coupling part (25) the disengagement position (EK ) between the coupling piece (25) and the coupling counterpiece (24) is given by the fact that there is a loose connection between the area of the head of the coupling piece (25) and the reseating area of the coupling counterpiece ( 24). Ejection device according to claim 1, characterized in that in the coupling position (K) there is a form-fitting bearing between the coupling part (25) and the coupling counterpart (24), in which this bearing in form drag can be released by means of the control device. Ejection device according to claim 1 or 2, characterized in that the coupling and decoupling element (27) can be moved in a guide track (28) in the support (3) or in a clamping element (7). Ejection device according to one of Claims 1 to 3, characterized in that the coupling part (25) can move together with the coupling and decoupling element (27) relative to the holder (3) during the opening movement up to reaching the predetermined opening travel (VO), and upon reaching the predetermined opening travel (VO), on the one hand, it fixes the coupling and uncoupling element (27) with respect to the support (3) and, on the other hand, the coupling (25) can move relative to the coupling and uncoupling element (27), in which the coupling and uncoupling element (27) has a stop (45), by means of which the coupling and uncoupling element (27) is it rests on the support (3), preferably on a head (37) of the support (3), when reaching the predetermined opening path (VO). Ejection device according to one of Claims 1 to 4, characterized in that in the case of a separate head region of the coupling part (25), the coupling position (K) between the coupling part (25) and the coupling counterpart (24) is provided in that there is a positive engagement between the head area of the coupling part (25) and a receiving area of the coupling counterpart (24). Ejection device according to one of Claims 1 to 5, characterized by an ejection element (4) for ejecting the movable furniture part (2) from the closed position (SS) to an open position (OS), and a ejection force accumulator (5) that drives the ejection element (4) in the opening direction (OR) of the mobile part of the furniture (2). Ejection device according to claim 6, characterized by a locking device (17) for locking the ejection element (4) in a locked position (VS), in which the locking device (17) can be unlocked overpressing the mobile part of the furniture (2) in an overpressure position (ÜS) placed behind the closed position (SS). Ejection device according to claim 6 or 7, characterized by a tensioning device (6) for tensioning the ejection force accumulator (5), preferably by pulling the movable furniture part (2) in the opening direction (OR ). Ejection device according to claim 8, characterized in that the coupling part (25) of the coupling device (26) is connected to the tensioning device (6), preferably in one piece with a tensioning element (7) of the tensioning device (6). Ejection device according to claim 8 or 9, characterized by a return device (13) with a return force accumulator (15) for moving the tensioning device (6) into a return position (R). Furniture (21) comprising a furniture body (22), a mobile furniture part (2) and an ejection device (1) according to one of claims 1 to 10 for the mobile furniture part (2). Furniture according to claim 11, characterized in that the ejection device (1) is coupled to the mobile part of the furniture (2) by means of the coupling device (26) located in the coupling position (K). Furniture item according to claim 11 or 12, characterized in that in the disengagement position (EK) the movable furniture part (2) is released from the coupling device (26).